Valve.



UNrrnD STATES PATENT carica..

i DWIGHT D. KIMBALL, 0F MEDFORD, HASSAQHUSETTS, ASSIGNOR, BY MESNE ASSIGN- MENTS, T0 WARREN WEBSTER & COMPANY, A CORPORATION 0F NEW JERSEY.

l VALVE.

Specication of Letters Patent.

l Patented Ang. 31, 1915.

l Application led March 8, 1913. Serial N0. 752,833.

'and other purposes, in which the thoroughfareof the valve body, between the inlet and regulating or controlling valve piece, is arranged to be shut off by an auxiliary or shut-off valve whose function is to close olf the supply of steam or other fluid to enable the regulating valve piece to be removed for repairs, and if desired, to also limit the staticmaximum opening in the supply .pas-

sage vfor the steam or fluid whose flow 1s to be regulated in passing through the valve. In this manner the steam passing in at the inlet may have its pressure throttled down to that desired, and the steam at reduced pressure may be then regulated by the ad-v` justment of the regulating or controlling valve piece.

My invention consists of certain features of construction and combinations of parts, by which the above specified objects may be attained, the same being fully described hereinafter and more specifically defined in the claims.

My improvements will be better understood by reference to the drawings,y in which:-

Figure 1 is a sectional elevation of a valve embodying my improvements; Fig. 2 is a plan view of the same taken on line :Jv-w; Fig. 3 is a perspective view of the regulating valvepiece removed; Fig. 4 is a sectional elevation of a modified form of my invention; and Fig. 5 is an end view of the auxiliary valve.

2 is the body of the valve and is provided with an inlet 3 and an outlet 4, the same being connected by a thoroughfare 21 having a valve seat 6 for the regulating valve piece v5 and a valve seat 22 for theshut-oif or auxiliary valve piece 33. The valve seat 6 communicates wlth the valve seat 22 by the port 7 and with the outlet 4 by a port 8. The valve piece 5 is tapered like a plug valve, and has an upwardly extending stem spindle 10 which is tted at the top with a handle 17 having a pointer 18. The spindle 10 extends through a stu'ling-box consisting ofa bushing 11 screwed into the opening at the top of the body which leads down into the spring chamber 14 and valve seat 6, a packlng 16 therein around the spindle and a gland 15 screwed into the bushingto comp ress the packing. This bushing makesa tlght joint with the upper edge of the body by a lead packing 12a. This lead packing 12a. seats within a circumferential groove 34 provided for the purpose in the abutting f face of the disk 12 of the bushing 11. The bushing 11 is provided with a disk 12, which provides means for rotating the bushing and for furnishing a scale over which the pointer 18 moves'for indicating the degree of open-` ing of the valve port, and the bushing is held against turning by means of the set screw 11EL when nce'screwed into place. The tapered valve piece 5 is held down to its sent by a spring 13, which surrounds the spindle 10 and is interposed between the bushing 11 and the valve piece. The valve piece 5 is provided with a port 9 through its side, said port having a maximum opening at 9 and terminating at its other circumferentialend 9b in a point (Fig. 3). The blank space 9 is somewhat more in width than will close the port 8 leading to the outlet 4. By this construction of valve piece the size of the opening through its wall in alinement may be gradually increased or decreased .from maximum to nothing. This port 9 is more or less rectangular at the end 9a and tapering or pointed at the end 9", but I do not confine myself to this character of port, nor to any particular form of regulating, valve piece and seat. The body below the valve seatl 6 and the valve piece is provided with a closed well 2O into which any dirt, rust, etc., may find its way to relieve the lvalve piece in fitting to its seat.

The auxiliary valve 33 screws into a lateral ideway in the body at 24 and is provide with a spindle 25 which may have a key socket 258L on its end by which a key may be inserted for screwing the valve 33 tightly upon its seat 22, or to a position reaches the regulating valve, whereby more easy regulation of the actual steam passing through the valve may be more readily ac 110 complished. The spindle 25 of the auxiliary valve extends through a stuffing-box comprising the packing 28, a collar 26 on one side of the packing and seated on the valve body, and a compressing gland or bushing 27 for compressing the packing. This bushing 27 may be made liquid-tight by the use of a packing 27, though in this c ase there is very little possibility of leakage owing to the presenceof the packing 28. The packing 27 is seated within a groove 35 provided or the purpose in one `of the members. By employing the annular collar 26, the guide hole may be tapped to provide the screw threads for the valve piece, the collar acts as an abutment or limit stop to restrict the outward adjustment of the valve piece and also acts to take the thrust of the packing. It provides a simple and effective construction for these purposes.

In the construction shown in Fig. 4, I have shown the valve modified to the extent that the auxiliary or shut-ofi' valve 33a seats upon a valve seat 7a at the juncture of the thoroughfare 21 and inlet 3. This does not change the general construction, as it is manifest that the auxiliary valve may control the thoroughfare at any place between the regulating valve piece 5 and the inlet.

I have shown m improved valve in the form which I re er in practice, but I do not limit mysel to the details so long as the valve body is provided with the auxiliary' v I claim as new and desire to secure by Letters Patent is 1. In a device of the character stated,a body having an inlet and an outlet, a tapered valve seat transversely disposed of said outlet, an auxiliary valve seat transversely disposed of said inlet and having its axial line at right angles to the axial line of said tapered valve seat, said auxiliary valve seat being between said tapered valve seat and said inlet, a tapered valve plug for said tapered valve seat having'a transverse -pas-y sage of decreasing width formed therein to regulate the iow of fluid from said inlet to said outlet, a stem for said plug projecting exterior of said body, a bushingencirclin said stem and adjustably secured to sai body, a. spring between said bushing and said plug to maintain said plug in operative position, threaded into said body and adapted to cooperate with said auxiliary valve seat whereby said tapered valve plug and its adjuncts may be removed for purpose of repair or the like by closing said auxiliary valve plug. 2. In a device of the character stated, a body having an inlet and an outlet, a tapered valve seat transversely disposed of said outlet and having its axis in alinement with said inlet, an auxiliary valve seat transversely disposed of said inlet and having its axial line at right angles to the axial line of said tapered valve seat, said auxiliary valve seat being between said tapered valve seat and said inlet, and also having its axis alined with said outlet, a tapered valve plug for said tapered valve seat having a transverse passage of decreasing width formed therein to regulate the flow of liquid from said inlet to said outlet, a stem for said plug projecting exterior of said casing, means to maintain said plug in operative position upon its seat, an auxiliary valve plug guided .into said body and adapted to cooperate with said auxiliary valve seat, said parts being so arranged that communication between the passages controlled by said tapered valve plug is only established by way of said auxihary valve seat whereby said tapered valve plug and its adjuncts .may be removed for purpose of repair or the like by closing said auxiliary valve plug.

In testlmony of which invention, I hereunto set my hand. l

DWIGHT I). KIMBALL.

Witnesses CHARLES SCHWEFEL, PAUL VVUNDERLICH.

and .an auxiliary valve' plug 

